A 13-year-old boy has died following an incident during his lunch break at a school in County Fermanagh.

Oisin McGrath, a student of St Michael's College in Enniskillen, was taken to hospital from the school on Monday.

He was later transferred to the Royal Victoria Hospital in Belfast, where he lost his fight for life on Thursday evening.

Parishioners at a special mass were told that, on medical advice, his parents had made the difficult decision to withdraw life support.

Their parish priest, Father Seamus Quinn, confirmed that the family had also opted to donate the schoolboy's organs for transplant.

He said: "There are no words to describe what they're going through. They're devastated, they're numb, they're in shock. It's a nightmare, except this one you don't waken up from. It's horrendous."

A sixth-form student, aged 17, was detained by police after the incident but later released on bail pending enquiries.

In a statement, St Michael's - a Catholic school for boys - said: "A group of students were playing at lunchtime when one student became unwell and we sought medical assistance.

"He was taken by ambulance to the South West Acute Hospital for medical help."

The school added that the Western Education and Library Board's critical incident response team were "on hand to offer reassurance, advice and emotional support to school staff and pupils".

A spokeswoman for Northern Ireland's Department of Education said they were "aware of the incident".

Oisin McGrath was a popular member of the under-14 team at Belcoo Gaelic football club in County Fermanagh.

In a statement, the club said: "Our thoughts remain with Oisin's extended family circle and friends at this tragic time ... ar dheis Dé go raibh a anam”.